Question

1. what is the dispersion of light ?
2. what is the blind spot in our eye?
3. state the laws of reflection ?
4. state the uses of electrolysis ?
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Answer 1

Answer:

1) The separation of visible light into its different colors is known as dispersion

2) The spot where your optic nerve connects to your retina has no light-sensitive cells, so you can't see anything there. That's your blind spot.

3) The first law of reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror, all lie in the same plane. The second law of reflection states that the angle of reflection is equal to the angle of incidence. Both angles are measured with respect to the normal to the mirror.

4) Electrolysis is used in industry for the production of many metals and non-metals (e.g., aluminium, magnesium, chlorine, and fluorine). Electrolysis is commonly employed for coating one metal with another. The method of coating one metal with another using an electric current is called electroplating.

Answer 2

Answer:

1) Dispersion, in wave motion, any phenomenon associated with the propagation of individual waves at speeds that depend on their wavelengths. ... Dispersion is sometimes called the separation of light into colours, an effect more properly called angular dispersion.

2) The spot where your optic nerve connects to your retina has no light-sensitive cells, so you can’t see anything there. That’s your blind spot.

3)The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

4) Electrolysis is used in industry for the production of many metals and non-metals (e.g., aluminium, magnesium, chlorine, and fluorine). Electrolysis is commonly employed for coating one metal with another. The method of coating one metal with another using an electric current is called electroplating.